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Finding the Fourth Proportional to 259,291.52, 388,847.33 and 90,808.13

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Solution

The fourth proportional to 259,291.52, 388,847.33 and 90,808.13 is: 136,180.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,291.52 : 388,847.33 = 90,808.13 : x
  2. Step 2: Convert to fraction form
    259,291.52/388,847.33 = 90,808.13/x
  3. Step 3: Cross multiply
    259,291.52x = 388,847.33 × 90,808.13
  4. Step 4: Simplify right side
    259,291.52x = 35,310,500,091.93
  5. Step 5: Solve for x
    x = 35,310,500,091.93/259,291.52
  6. Step 6: Final answer
    x = 136,180.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.